<?php
/* For licensing terms, see /dokeos_license.txt */
/**
==============================================================================
* @package dokeos.auth
* @todo check if unsubscribing from a course WITH group memberships works as it should
* @todo constants are in uppercase, variables aren't
==============================================================================
*/
/*
==============================================================================
INIT SECTION
==============================================================================
*/
// Names of the language file that needs to be included.
$language_file = array ('courses', 'registration');
// Delete the globals['_cid'], we don't need it here.
$cidReset = true; // Flag forcing the 'current course' reset
// Including the global file.
require_once '../inc/global.inc.php';
if (api_get_setting('show_courses_descriptions_in_catalog') == 'true') {
// additional html (javascript and style css)
$htmlHeadXtra[] = '< script type = "text/javascript" > ' .
'var GB_ROOT_DIR = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/"' .
'< / script > ';
$htmlHeadXtra[] = '< script src = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.js" type = "text/javascript" language = "javascript" > < / script > ';
$htmlHeadXtra[] = '< script src = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/AJS.js" type = "text/javascript" language = "javascript" > < / script > ';
$htmlHeadXtra[] = '< script src = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/AJS_fx.js" type = "text/javascript" language = "javascript" > < / script > ';
$htmlHeadXtra[] = '< script src = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/gb_scripts.js" type = "text/javascript" language = "javascript" > < / script > ';
$htmlHeadXtra[] = '< link href = "'.api_get_path(WEB_LIBRARY_PATH).'javascript/greybox/gb_styles.css" rel = "stylesheet" type = "text/css" / > ';
}
// Section for the tabs.
$this_section = SECTION_COURSES;
// Acces rights: anonymous users can't do anything usefull here.
api_block_anonymous_users();
if (!(api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course())) {
if (api_get_setting('allow_students_to_browse_courses') == 'false') {
api_not_allowed();
}
}
// Include additional libraries.
include_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
require_once api_get_path(LIBRARY_PATH).'course.lib.php';
require_once api_get_path(LIBRARY_PATH).'mail.lib.inc.php';
$ctok = $_SESSION['sec_token'];
$stok = Security::get_token();
// Database table definitions.
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
$tbl_courses_nodes = Database::get_main_table(TABLE_MAIN_CATEGORY);
$tbl_courseUser = Database::get_main_table(TABLE_MAIN_COURSE_USER);
$tbl_user = Database::get_main_table(TABLE_MAIN_USER);
// Filter.
$safe = array();
$safe['action'] = '';
$actions = array('sortmycourses', 'createcoursecategory', 'subscribe', 'deletecoursecategory', 'unsubscribe');
if (in_array(htmlentities($_GET['action']), $actions)) {
$safe['action'] = htmlentities($_GET['action']);
}
// Title of the page.
if ($safe['action'] == 'sortmycourses' || !isset($safe['action'])) {
$nameTools = get_lang('SortMyCourses');
}
if ($safe['action'] == 'createcoursecategory') {
$nameTools = get_lang('CreateCourseCategory');
}
if ($safe['action'] == 'subscribe') {
$nameTools = get_lang('SubscribeToCourse');
}
// Breadcrumbs.
$interbreadcrumb[] = array('url' => api_get_path(WEB_PATH).'user_portal.php', 'name' => get_lang('MyCourses'));
if (empty($nameTools)) {
$nameTools = get_lang('CourseManagement');
} else {
$interbreadcrumb[] = array('url' => api_get_path(WEB_CODE_PATH).'auth/courses.php', 'name' => get_lang('CourseManagement'));
}
// Displaying the header.
Display::display_header($nameTools);
/*
==============================================================================
COMMANDS SECTION
==============================================================================
*/
unset($message);
// We are moving a course or category of the user up/down the list (=Sort My Courses).
if (isset($_GET['move'])) {
if (isset($_GET['course'])) {
if ($ctok == $_GET['sec_token']) {
$message = move_course($_GET['move'], $_GET['course'], $_GET['category']);
}
}
if (isset($_GET['category']) and !$_GET['course']) {
if ($ctok == $_GET['sec_token']) {
$message = move_category($_GET['move'], $_GET['category']);
}
}
}
// We are moving the course of the user to a different user defined course category (=Sort My Courses).
if (isset($_POST['submit_change_course_category'])) {
if ($ctok == $_POST['sec_token']) {
$message = store_changecoursecategory($_POST['course_2_edit_category'], $_POST['course_categories']);
}
}
// We are creating a new user defined course category (= Create Course Category).
if (isset($_POST['create_course_category']) & & isset($_POST['title_course_category']) & & strlen(trim($_POST['title_course_category'])) > 0) {
if ($ctok == $_POST['sec_token']) {
$message = store_course_category();
}
}
if (isset($_POST['submit_edit_course_category']) & & isset($_POST['title_course_category']) & & strlen(trim($_POST['title_course_category'])) > 0) {
if ($ctok == $_POST['sec_token']) {
$message = store_edit_course_category();
}
}
// We are subcribing to a course (=Subscribe to course).
if (isset($_POST['subscribe'])) {
if ($ctok == $_POST['sec_token']) {
$message = subscribe_user($_POST['subscribe']);
}
}
// We are unsubscribing from a course (=Unsubscribe from course).
if (isset($_POST['unsubscribe'])) {
if ($ctok == $_POST['sec_token']) {
$message = remove_user_from_course($_user['user_id'], $_POST['unsubscribe']);
}
}
// we are deleting a course category
if ($safe['action'] == 'deletecoursecategory' & & isset($_GET['id'])) {
if ($ctok == $_GET['sec_token']) {
$get_id_cat = Security::remove_XSS($_GET['id']);
$message = delete_course_category($get_id_cat);
}
}
/*
==============================================================================
DISPLAY SECTION
==============================================================================
*/
// Diplaying the tool title
// api_display_tool_title($nameTools);
// we are displaying any result messages;
if (isset($message)) {
Display::display_confirmation_message($message, false);
}
// The menu with the different options in the course management
echo "< div id = \"actions\" class = 'actions' > ";
if ($safe['action'] != 'sortmycourses' & & isset($safe['action'])) {
echo " < a href = \"".api_get_self()."?action=sortmycourses\" > ".Display::return_icon('deplacer_fichier.gif', get_lang('SortMyCourses')).' '.get_lang('SortMyCourses')."< / a > ";
} else {
echo ' < strong > '.Display::return_icon('deplacer_fichier.gif', get_lang('SortMyCourses')).' '.get_lang('SortMyCourses').'< / strong > ';
}
echo ' ';
if ($safe['action'] != 'createcoursecategory') {
echo " < a href = \"".api_get_self()."?action=createcoursecategory\" > ".Display::return_icon('folder_new.gif', get_lang('CreateCourseCategory')).' '.get_lang('CreateCourseCategory')."< / a > ";
} else {
echo ' < strong > '.Display::return_icon('folder_new.gif', get_lang('CreateCourseCategory')).' '.get_lang('CreateCourseCategory').'< / strong > ';
}
echo ' ';
if ($safe['action'] != 'subscribe') {
echo " < a href = \"".api_get_self()."?action=subscribe\" > ".Display::return_icon('view_more_stats.gif', get_lang('SubscribeToCourse')).' '.get_lang('SubscribeToCourse')."< / a > ";
} else {
echo ' < strong > '.Display::return_icon('view_more_stats.gif', get_lang('SubscribeToCourse')).' '.get_lang('SubscribeToCourse').'< / strong > ';
}
echo "< / div > ";
echo "< div > ";
switch ($safe['action']) {
case 'subscribe':
//api_display_tool_title(get_lang('SubscribeToCourse'));
courses_subscribing();
break;
case 'unsubscribe':
//api_display_tool_title(get_lang('UnsubscribeFromCourse'));
$user_courses = get_courses_of_user($_user['user_id']);
display_courses($_user['user_id'], true, $user_courses);
break;
case 'createcoursecategory':
//api_display_tool_title(get_lang('CreateCourseCategory'));
display_create_course_category_form();
break;
case 'deletecoursecategory':
case 'sortmycourses':
default:
//api_display_tool_title(get_lang('SortMyCourses'));
$user_courses = get_courses_of_user($_user['user_id']);
display_courses($_user['user_id'], true, $user_courses);
break;
}
echo '< / div > ';
Display :: display_footer();
/*
==============================================================================
FUNCTIONS
==============================================================================
*/
/**
* Subscribe the user to a given course
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $course_code the code of the course the user wants to subscribe to
* @return string we return the message that is displayed when the action is succesfull
*/
function subscribe_user($course_code) {
global $_user, $stok;
$all_course_information = CourseManager::get_course_information($course_code);
if ($all_course_information['registration_code'] == '' || $_POST['course_registration_code'] == $all_course_information['registration_code']) {
if (api_is_platform_admin()) {
$status_user_in_new_course = COURSEMANAGER;
} else {
$status_user_in_new_course=null;
}
if (CourseManager::add_user_to_course($_user['user_id'], $course_code, $status_user_in_new_course)) {
$send = api_get_course_setting('email_alert_to_teacher_on_new_user_in_course', $course_code);
if ($send == 1) {
CourseManager::email_to_tutor($_user['user_id'], $course_code, $send_to_tutor_also = false);
} else if ($send == 2){
CourseManager::email_to_tutor($_user['user_id'], $course_code, $send_to_tutor_also = true);
}
return get_lang('EnrollToCourseSuccessful');
} else {
return get_lang('ErrorContactPlatformAdmin');
}
} else {
$return = '';
if (isset($_POST['course_registration_code']) & & $_POST['course_registration_code'] != $all_course_information['registration_code']) {
Display::display_error_message(get_lang('CourseRegistrationCodeIncorrect'));
}
$return .= get_lang('CourseRequiresPassword').'< br / > ';
$return .= $all_course_information['visual_code'].' - '.$all_course_information['title'];
$return .= "< form action = \"".$_SERVER["REQUEST_URI"]."\" method = \"post\" > ";
$return .= '< input type = "hidden" name = "sec_token" value = "'.$stok.'" / > ';
$return .= "< input type = \"hidden\" name = \"subscribe\" value = \"".$all_course_information['code']."\" / > ";
$return .= "< input type = \"text\" name = \"course_registration_code\" value = \"".$_POST['course_registration_code']."\" / > ";
$return .= "< input type = \"submit\" name = \"submit_course_registration_code\" value = \"OK\" alt = \"".get_lang('SubmitRegistrationCode')."\" / > < / form > ";
return $return;
}
}
/**
* unsubscribe the user from a given course
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param int $user_id The user id of the user that is performing the unsubscribe action
* @param string $course_code the course code of the course the user wants to unsubscribe from
* @return string we return the message that is displayed when the action is succesfull
*/
function remove_user_from_course($user_id, $course_code) {
$tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
// we check (once again) if the user is not course administrator
// because the course administrator cannot unsubscribe himself
// (s)he can only delete the course
$sql_check = "SELECT * FROM $tbl_course_user WHERE user_id='".$user_id."' AND course_code='".$course_code."' AND status='1'";
$result_check = Database::query($sql_check, __FILE__, __LINE__);
$number_of_rows = Database::num_rows($result_check);
if ($number_of_rows > 0) {
return false;
}
CourseManager::unsubscribe_user($user_id, $course_code);
return get_lang('YouAreNowUnsubscribed');
}
/**
* handles the display of the courses to which the user can subscribe
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
*/
function courses_subscribing() {
browse_courses();
display_search_courses();
}
/**
* Allows you to browse through the course categories (faculties) and subscribe to the courses of
* this category (faculty)
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
*/
function browse_courses() {
browse_course_categories();
if (!isset($_POST['search_course'])) {
browse_courses_in_category();
}
}
/**
* Counts the number of courses in a given course category
*/
function count_courses_in_category($category) {
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
$sql = "SELECT * FROM $tbl_course WHERE category_code".(empty($category) ? " IS NULL" : "='".$category."'");
// Showing only the courses of the current Dokeos access_url_id.
global $_configuration;
if ($_configuration['multiple_access_urls']) {
$url_access_id = api_get_current_access_url_id();
if ($url_access_id != -1) {
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql = "SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
ON (url_rel_course.course_code=course.code)
WHERE access_url_id = $url_access_id AND category_code".(empty($category) ? " IS NULL" : "='".$category."'");
}
}
return Database::num_rows(Database::query($sql, __FILE__, __LINE__));
}
/**
* displays the browsing of the course categories (faculties)
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return HTML code containing a list with all the categories and subcategories and the navigation to go one category up(if needed)
*/
function browse_course_categories() {
global $stok;
$tbl_courses_nodes = Database::get_main_table(TABLE_MAIN_CATEGORY);
$category = Database::escape_string($_GET['category']);
$safe_url_categ = Security::remove_XSS($_GET['category']);
echo "< p > < strong > ".get_lang('CourseCategories')."< / strong > ";
$sql = "SELECT * FROM $tbl_courses_nodes WHERE parent_id ".(empty($category) ? "IS NULL" : "='".$category."'")." GROUP BY code, parent_id ORDER BY tree_pos ASC";
$result = Database::query($sql, __FILE__, __LINE__);
echo "< ul > ";
while ($row = Database::fetch_array($result)) {
$count_courses_in_categ = count_courses_in_category($row['code']);
if ($row['children_count'] > 0 || $count_courses_in_categ > 0) {
echo "< li > < a href = \"".api_get_self()."?action=subscribe&category=".$row['code']."&up=".$safe_url_categ."&sec_token=".$stok."\" > ".$row['name']."< / a > ".
" (".$count_courses_in_categ.")< / li > ";
} elseif ($row['nbChilds'] > 0) {
echo "< li > < a href = \"".api_get_self()."?action=subscribe&category=".$row['code']."&up=".$safe_url_categ."&sec_token=".$stok."\" > ".$row['name']."< / a > < / li > ";
} else {
echo "< li > ".$row['name']."< / li > ";
}
}
echo "< / ul > ";
if ($_GET['category']) {
echo "< a href = \"".api_get_self()."?action=subscribe&category=".Security::remove_XSS($_GET['up'])."&sec_token=".$stok."\" > ".Display::return_icon('back.png',get_lang('UpOneCategory'),array('align'=>'absmiddle')).get_lang('UpOneCategory')."< / a > ";
}
}
/**
* Display all the courses in the given course category. I could have used a parameter here
* but instead I use the already available $_GET['category']
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return HTML code: a table with all the courses in a given category (title, code, tutor) and a subscription icon if applicable)
*/
function browse_courses_in_category() {
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
$category = Database::escape_string($_GET['category']);
echo "< p > < strong > ".get_lang('CoursesInCategory')."< / strong > ";
$my_category = (empty($category) ? " IS NULL" : "='".$category."'");
$sql = "SELECT * FROM $tbl_course WHERE category_code".$my_category.' ORDER BY title, visual_code';
//showing only the courses of the current Dokeos access_url_id
global $_configuration;
if ($_configuration['multiple_access_urls']) {
$url_access_id = api_get_current_access_url_id();
if ($url_access_id != -1) {
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql = "SELECT * FROM $tbl_course as course INNER JOIN $tbl_url_rel_course as url_rel_course
ON (url_rel_course.course_code=course.code)
WHERE access_url_id = $url_access_id AND category_code".$my_category.' ORDER BY title, visual_code';
}
}
$result = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($result)) {
$row['registration_code'] = !empty($row['registration_code']);
$courses[] = array('code' => $row['code'], 'directory' => $row['directory'], 'db' => $row['db_name'], 'visual_code' => $row['visual_code'], 'title' => $row['title'], 'tutor' => $row['tutor_name'], 'subscribe' => $row['subscribe'], 'unsubscribe' => $row['unsubscribe'], 'registration_code' => $registration_code);
}
display_subscribe_to_courses($courses);
}
/**
* displays the form for searching for a course and the results if a query has been submitted.
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return HTML code: the form for searching for a course
*/
function display_search_courses() {
global $_user, $stok;
echo "< p > < strong > ".get_lang('SearchCourse')."< / strong > < br / > ";
echo "< form class = \"course_list\" method = \"post\" action = \"".api_get_self()."?action=subscribe\" > ",
'< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ',
"< input type = \"hidden\" name = \"search_course\" value = \"1\" / > ",
"< input type = \"text\" name = \"search_term\" value = \"".(empty($_POST['search_term']) ? ' ' : Security::remove_XSS ( $ _POST [ ' search_term ' ] ) ) . " \ " / > ",
" < button class = \"search\" type = \"submit\" > ",get_lang('_search'),"< / button > ",
"< / form > ";
if (isset($_POST['search_course'])) {
echo "< p > < strong > ".get_lang('SearchResultsFor')." ".api_htmlentities($_POST['search_term'], ENT_QUOTES, api_get_system_encoding())."< / strong > < br / > ";
$result_search_courses_array = search_courses($_POST['search_term']);
display_subscribe_to_courses($result_search_courses_array);
}
}
/**
* This function displays the list of course that can be subscribed to.
* This list can come from the search results or from the browsing of the platform course categories
*/
function display_subscribe_to_courses($courses) {
global $_user;
// getting all the courses to which the user is subscribed to
$user_courses = get_courses_of_user($_user['user_id']);
$user_coursecodes = array();
// we need only the course codes as these will be used to match against the courses of the category
if ($user_courses != '') {
foreach ($user_courses as $key => $value) {
$user_coursecodes[] = $value['code'];
}
}
if ($courses == 0) {
return false;
}
echo "< table cellpadding = \"4\" > \n";
foreach ($courses as $key=>$course) {
// displaying the course title, visual code and teacher/teaching staff
echo "\t< tr > \n";
if (api_get_setting('show_courses_descriptions_in_catalog') == 'true') {
// block course description
echo "\t\t< td > ";
$icon_title = get_lang('CourseDetails') . ' - ' . $course['title'];
echo "< a href = 'course_description.php?code=".$course[' code ' ] . " ' title = '$icon_title' rel = 'gb_page_center[778]' > ".Display::return_icon('synthese_view.gif', $icon_title)."< / a > ";
echo "\t\t< / td > ";
}
echo "\t\t< td > \n";
echo "< strong > ".$course['title']."< / strong > < br / > ";
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
echo $course['visual_code'];
}
if (api_get_setting('display_coursecode_in_courselist') == 'true' & & api_get_setting('display_teacher_in_courselist') == 'true') {
echo " - ";
}
if (api_get_setting('display_teacher_in_courselist') == 'true') {
echo $course['tutor'];
}
echo "\t\t< / td > \n";
echo "\t\t< td > \n";
if ($course['registration_code']) {
Display::display_icon('passwordprotected.png', '', array('style' => 'float:left;'));
}
display_subscribe_icon($course, $user_coursecodes);
echo "\t\t< / td > \n";
echo "< / tr > ";
}
echo "< / table > ";
}
/**
* Search the courses database for a course that matches the search term.
* The search is done on the code, title and tutor field of the course table.
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $search_term: the string that the user submitted, what we are looking for
* @return array an array containing a list of all the courses (the code, directory, dabase, visual_code, title, ... )
* matching the the search term.
*/
function search_courses($search_term) {
$TABLECOURS = Database::get_main_table(TABLE_MAIN_COURSE);
$search_term_safe = Database::escape_string($search_term);
$sql_find = "SELECT * FROM $TABLECOURS WHERE code LIKE '%".$search_term_safe."%' OR title LIKE '%".$search_term_safe."%' OR tutor_name LIKE '%".$search_term_safe."%' ORDER BY title, visual_code ASC";
global $_configuration;
if ($_configuration['multiple_access_urls']) {
$url_access_id = api_get_current_access_url_id();
if ($url_access_id != -1) {
$tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
$sql_find = "SELECT * FROM $TABLECOURS as course INNER JOIN $tbl_url_rel_course as url_rel_course
ON (url_rel_course.course_code=course.code)
WHERE access_url_id = $url_access_id AND (code LIKE '%".$search_term_safe."%' OR title LIKE '%".$search_term_safe."%' OR tutor_name LIKE '%".$search_term_safe."%' ) ORDER BY title, visual_code ASC ";
}
}
$result_find = Database::query($sql_find, __FILE__, __LINE__);
while ($row = Database::fetch_array($result_find)) {
$courses[] = array('code' => $row['code'], 'directory' => $row['directory'], 'db' => $row['db_name'], 'visual_code' => $row['visual_code'], 'title' => $row['title'], 'tutor' => $row['tutor_name'], 'subscribe' => $row['subscribe'], 'unsubscribe' => $row['unsubscribe']);
}
return $courses;
}
/**
* deletes a course category and moves all the courses that were in this category to main category
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param int $id: the id of the user_course_category
* @return string a language variable saying that the deletion went OK.
*/
function delete_course_category($id) {
global $_user, $_configuration;
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
$id = intval($id);
$sql_delete = "DELETE FROM $tucc WHERE id='".$id."' and user_id='".$_user['user_id']."'";
$sql_update = "UPDATE $TABLECOURSUSER SET user_course_cat='0' WHERE user_course_cat='".$id."' AND user_id='".$_user['user_id']."'";
Database::query($sql_delete, __FILE__, __LINE__);
Database::query($sql_update, __FILE__, __LINE__);
return get_lang('CourseCategoryDeleted');
}
/**
* stores the user course category in the dokeos_user database
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return string a language variable saying that the user course category was stored
*/
function store_course_category() {
global $_user, $_configuration;
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
// step 1: we determine the max value of the user defined course categories
$sql = "SELECT sort FROM $tucc WHERE user_id='".$_user['user_id']."' ORDER BY sort DESC";
$result = Database::query($sql, __FILE__, __LINE__);
$maxsort = Database::fetch_array($result);
$nextsort = $maxsort['sort'] + 1;
// step 2: we check if there is already a category with this name, if not we store it, else we give an error.
$sql = "SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."' AND title='".Database::escape_string($_POST['title_course_category'])."'ORDER BY sort DESC";
$result = Database::query($sql, __FILE__, __LINE__);
if (Database::num_rows($result) == 0) {
$sql_insert = "INSERT INTO $tucc (user_id, title,sort) VALUES ('".$_user['user_id']."', '".api_htmlentities($_POST['title_course_category'], ENT_QUOTES, api_get_system_encoding())."', '".$nextsort."')";
Database::query($sql_insert, __FILE__, __LINE__);
Display::display_confirmation_message(get_lang("CourseCategoryStored"));
} else {
Display::display_error_message(get_lang('ACourseCategoryWithThisNameAlreadyExists'));
}
}
/**
* displays the form that is needed to create a course category.
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return HTML the form (input field + submit button) to create a user course category
*/
function display_create_course_category_form()
{
global $_user, $_configuration, $stok;
echo "< form name = \"create_course_category\" method = \"post\" action = \"".api_get_self()."?action=sortmycourses\" > \n";
echo '< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ';
echo "< input type = \"text\" name = \"title_course_category\" / > \n";
echo "< button type = \"submit\" class = \"save\" name = \"create_course_category\" > ".get_lang('Ok')."< / button > \n";
echo "< / form > \n";
echo get_lang('ExistingCourseCategories');
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql = "SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."'";
$result = Database::query($sql, __LINE__, __FILE__);
if (Database::num_rows($result) > 0) {
echo "< ul > \n";
while ($row = Database::fetch_array($result)) {
echo "\t< li > ".$row['title']."< / li > \n";
}
echo "< / ul > \n";
}
}
// ***************************************************************************
// this function stores the changes in a course category
//
// ***************************************************************************
/**
* stores the changes in a course category (moving a course to a different course category)
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $course_code : the course_code of the course we are moving
* int $newcategory : the id of the user course category we are moving the course to.
* @return string a language variable saying that the course was moved.
*/
function store_changecoursecategory($course_code, $newcategory) {
global $_user;
$course_code = Database::escape_string($course_code);
$newcategory = Database::escape_string($newcategory);
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
$max_sort_value = api_max_sort_value($newcategory, $_user['user_id']); // max_sort_value($newcategory);
$sql = "UPDATE $TABLECOURSUSER SET user_course_cat='".$newcategory."', sort='".($max_sort_value + 1)."' WHERE course_code='".$course_code."' AND user_id='".$_user['user_id']."'";
$result = Database::query($sql, __FILE__, __LINE__);
return get_lang('EditCourseCategorySucces');
}
/**
* moves the course one place up or down
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $direction : the direction we are moving the course to (up or down)
* string $course2move : the course we are moving
* @return string a language variable saying that the course was moved.
*/
function move_course($direction, $course2move, $category) {
global $_user;
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
$all_user_courses = get_courses_of_user($_user['user_id']);
// we need only the courses of the category we are moving in
$user_courses = array();
foreach ($all_user_courses as $key => $course) {
if ($course['user_course_category'] == $category) {
$user_courses[] = $course;
}
}
foreach ($user_courses as $key => $course) {
if ($course2move == $course['code']) {
// source_course is the course where we clicked the up or down icon
$source_course = $course;
// target_course is the course before/after the source_course (depending on the up/down icon)
if ($direction == 'up') {
$target_course = $user_courses[$key - 1];
} else {
$target_course = $user_courses[$key + 1];
}
} // if ($course2move == $course['code'])
}
if (count($target_course) > 0 & & count($source_course) > 0) {
$sql_update1 = "UPDATE $TABLECOURSUSER SET sort='".$target_course['sort']."' WHERE course_code='".$source_course['code']."' AND user_id='".$_user['user_id']."'";
$sql_update2 = "UPDATE $TABLECOURSUSER SET sort='".$source_course['sort']."' WHERE course_code='".$target_course['code']."' AND user_id='".$_user['user_id']."'";
Database::query($sql_update2, __FILE__, __LINE__);
Database::query($sql_update1, __FILE__, __LINE__);
return get_lang('CourseSortingDone');
}
return '';
}
/**
* Moves the course one place up or down
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $direction : the direction we are moving the course to (up or down)
* string $course2move : the course we are moving
* @return string a language variable saying that the course was moved.
*/
function move_category($direction, $category2move) {
global $_user;
// the database definition of the table that stores the user defined course categories
$table_user_defined_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$user_coursecategories = get_user_course_categories();
$user_course_categories_info = get_user_course_categories_info();
foreach ($user_coursecategories as $key => $category_id) {
if ($category2move == $category_id) {
// source_course is the course where we clicked the up or down icon
//$source_category=get_user_course_category($category2move);
$source_category = $user_course_categories_info[$category2move];
// target_course is the course before/after the source_course (depending on the up/down icon)
if ($direction == 'up') {
$target_category = $user_course_categories_info[$user_coursecategories[$key - 1]];
} else {
$target_category = $user_course_categories_info[$user_coursecategories[$key + 1]];
}
} // if ($course2move == $course['code'])
} // foreach ($user_courses as $key => $course)
if (count($target_category) > 0 & & count($source_category) > 0) {
$sql_update1="UPDATE $table_user_defined_category SET sort='".$target_category['sort']."' WHERE id='".$source_category['id']."' AND user_id='".$_user['user_id']."'";
$sql_update2="UPDATE $table_user_defined_category SET sort='".$source_category['sort']."' WHERE id='".$target_category['id']."' AND user_id='".$_user['user_id']."'";
Database::query($sql_update2, __FILE__, __LINE__);
Database::query($sql_update1, __FILE__, __LINE__);
return get_lang('CategorySortingDone');
}
return '';
}
/**
* displays everything that is needed when the user wants to manage his current courses (sorting, subscribing, unsubscribing, ...)
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param int $user_id: the user_id of the current user
* string $parameter: determines weither we are displaying for the sorting, subscribing or unsubscribin
array $user_courses: the courses to which the user is subscribed
* @return html a table containing courses and the appropriate icons (sub/unsub/move)
*/
function display_courses($user_id, $show_course_icons, $user_courses) {
global $_user, $_configuration;
echo "< table cellpadding = \"4\" > \n";
// building an array that contains all the id's of the user defined course categories
// initially this was inside the display_courses_in_category function but when we do it here we have fewer
// sql executions = performance increase.
$all_user_categories = get_user_course_categories();
// step 0: we display the course without a user category
display_courses_in_category(0, 'true');
// Step 1: We get all the categories of the user.
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql = "SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."' ORDER BY sort ASC";
$result = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($result)) {
if ($show_course_icons) {
// The edit link is clicked.
if (isset($_GET['categoryid']) & & $_GET['categoryid'] == $row['id']) {
// We display the edit form for the category.
echo "< tr > < td colspan = \"2\" class = \"user_course_category\" > ";
echo '< a name = "category'.$row['id'].'" > < / a > '; // display an internal anchor.
display_edit_course_category_form($row['id']);
} else {
// We simply display the title of the category.
echo "< tr > < td colspan = \"2\" class = \"user_course_category\" > ";
echo '< a name = "category'.$row['id'].'" > < / a > '; // display an internal anchor.
echo $row['title'];
}
echo "< / td > < td class = \"user_course_category\" > ";
display_category_icons($row['id'], $all_user_categories);
echo "< / td > < / tr > ";
}
// Step 2: Show the courses inside this category.
display_courses_in_category($row['id'], $show_course_icons);
}
echo "< / table > \n";
}
/**
* This function displays all the courses in the particular user category;
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param int id: the id of the user defined course category
* @return string: the name of the user defined course category
*/
function display_courses_in_category($user_category_id, $showicons) {
global $_user;
// table definitions
$TABLECOURS=Database::get_main_table(TABLE_MAIN_COURSE);
$TABLECOURSUSER=Database::get_main_table(TABLE_MAIN_COURSE_USER);
$TABLE_USER_COURSE_CATEGORY = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql_select_courses = "SELECT course.code, course.visual_code, course.subscribe subscr, course.unsubscribe unsubscr,
course.title title, course.tutor_name tutor, course.db_name, course.directory, course_rel_user.status status,
course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
FROM $TABLECOURS course,
$TABLECOURSUSER course_rel_user
WHERE course.code = course_rel_user.course_code
AND course_rel_user.user_id = '".$_user['user_id']."'
AND course_rel_user.user_course_cat='".$user_category_id."'
ORDER BY course_rel_user.user_course_cat, course_rel_user.sort ASC";
$result = Database::query($sql_select_courses,__FILE__,__LINE__);
$number_of_courses = Database::num_rows($result);
$key = 0;
while ($course = Database::fetch_array($result)) {
echo "\t< tr > \n";
if (api_get_setting('show_courses_descriptions_in_catalog') == 'true') {
// block course description
echo "\t\t< td > ";
$icon_title = get_lang('CourseDetails') . ' - ' . $course['title'];
echo "< a href = 'course_description.php?code=".$course[' code ' ] . " ' title = '$icon_title' rel = 'gb_page_center[778]' > ".Display::return_icon('synthese_view.gif', $icon_title)."< / a > ";
echo "\t\t< / td > ";
}
echo "\t\t< td > \n";
echo '< a name = "course'.$course['code'].'" > < / a > '; // display an internal anchor.
echo "< strong > ".$course['title']."< / strong > < br / > ";
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
echo $course['visual_code'];
}
if (api_get_setting('display_coursecode_in_courselist') == 'true' & & api_get_setting('display_teacher_in_courselist') == 'true') {
echo " - ";
}
if (api_get_setting('display_teacher_in_courselist') == 'true') {
echo $course['tutor'];
}
echo "\t\t< / td > \n";
// displaying the up/down/edit icons when we are sorting courses
echo "\t\t< td valign = \"top\" > \n";
//if ($parameter == 'sorting')
//{
display_course_icons($key, $number_of_courses, $course);
//}
// displaying the delete icon when we are unsubscribing from courses
//if($parameter == 'deleting')
//{
// display_unsubscribe_icons($course);
//}
// display the subscribing icon when we are to courses.
//if ($parameter == 'subscribing')
//{
// display_subscribe_icon($course);
//}
echo "\t\t< / td > \n";
echo "\t< / tr > \n";
$key++;
}
}
/**
* gets the title of the user course category
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param int id: the id of the user defined course category
* @return string: the name of the user defined course category
*/
function get_user_course_category($id) {
global $_user, $_configuration;
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$id = intval($id);
return Database::fetch_array(Database::query("SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."' AND id='$id'", __FILE__, __LINE__));
}
/**
* displays the subscribe icon if the subscribing is allowed and if the user is not yet
* subscribe to this course
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $current_course: the course code of the course we need to display the subscribe icon for
* @return string a subscribe icon or the text that subscribing is not allowed or the user is already subscribed
*/
function display_subscribe_icon($current_course, $user_coursecodes) {
global $stok;
// we display the icon to subscribe or the text already subscribed
if (in_array($current_course['code'], $user_coursecodes)) {
Display::display_icon('enroll_na.gif', get_lang('AlreadySubscribed'));
} else {
if ($current_course['subscribe'] == SUBSCRIBE_ALLOWED) {
echo "< form action = \"".$_SERVER["REQUEST_URI"]."\" method = \"post\" > ";
echo '< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ';
echo "< input type = \"hidden\" name = \"subscribe\" value = \"".$current_course['code']."\" / > ";
if (!empty($_POST['search_term'])) {
echo '< input type = "hidden" name = "search_course" value = "1" / > ';
echo '< input type = "hidden" name = "search_term" value = "'.Security::remove_XSS($_POST['search_term']).'" / > ';
}
echo "< input style = \"border-color:#fff\" type = \"image\" name = \"unsub\" src = \"".api_get_path(WEB_IMG_PATH)."enroll.gif\" title = \"".get_lang('Subscribe')."\" alt = \"".get_lang('Subscribe')."\" / > < / form > ";
} else {
// echo get_lang('SubscribingNotAllowed');
Display::display_icon('enroll_na.gif', get_lang('SubscribingNotAllowed'));
}
}
}
/**
* Displays the subscribe icon if the subscribing is allowed and if the user is not yet
* subscribed to this course
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param $key:
* $number_of_courses
* $course
* $user_courses
* @return html a small table containing the up/down icons and the edit icon (for moving to a different user course category)
* @todo complete the comments on this function: the parameter section
*/
function display_course_icons($key, $number_of_courses, $course) {
global $safe, $stok;
echo "< table > < tr > < td > ";
// the up icon
if ($key > 0) {
echo "< a href = \"courses.php?action=".$safe['action']."&move=up&course=".$course['code']."&category=".$course['user_course_cat']."&sec_token=".$stok."\" > ";
Display::display_icon('up.gif', get_lang('Up'));
echo '< / a > ';
}
echo "< / td > ";
// the edit icon OR the edit dropdown list
if (isset($_GET['edit']) & & $course['code'] == $_GET['edit']) {
echo "< td rowspan = \"2\" valign = \"top\" > ".display_change_course_category_form($_GET['edit'])."< / td > ";
} else {
echo "< td rowspan = \"2\" valign = \"middle\" > < a href = \"courses.php?action=".$safe['action']."&edit=".$course['code']."&sec_token=".$stok."\" > ";
Display::display_icon('edit.gif', get_lang('Edit'));
echo "< / a > < / td > ";
}
echo "< td rowspan = \"2\" valign = \"top\" class = \"invisible\" > ";
if ($course['status'] != 1) {
if ($course['unsubscr'] == 1) {
// changed link to submit to avoid action by the search tool indexer
echo "< form action = \"".api_get_self()."\" method = \"post\" onsubmit = \"javascript: if ( ! confirm ( ' " . addslashes ( api_htmlentities ( get_lang ( " ConfirmUnsubscribeFromCourse " ) , ENT_QUOTES , api_get_system_encoding ( ) ) ) . " ' ) ) return false ; \ " > ";
echo '< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ';
echo "< input type = \"hidden\" name = \"unsubscribe\" value = \"".$course['code']."\" / > ";
echo '< input type = "image" name = "unsub" style = "border-color:#fff" src = "'.api_get_path(WEB_IMG_PATH).'delete.gif" title = "'.get_lang('_unsubscribe').'" alt = "'.get_lang('_unsubscribe').'" / > < / form > ';
} else {
display_info_text(get_lang('UnsubscribeNotAllowed'));
}
} else {
display_info_text(get_lang('CourseAdminUnsubscribeNotAllowed'));
}
echo "< / td > ";
echo "< / tr > < tr > < td > ";
if ($key < $number_of_courses - 1) {
echo "< a href = \"courses.php?action=".$safe['action']."&move=down&course=".$course['code']."&category=".$course['user_course_cat']."&sec_token=".$stok."\" > ";
Display::display_icon('down.gif', get_lang('Down'));
echo '< / a > ';
}
echo "< / td > < / tr > < / table > ";
}
/**
* displays the relevant icons for the category (if applicable):move up, move down, edit, delete
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param $current_category the id of the current category
* $allcategories an associative array containing all the categories.
* @return html: a small table containing the up/down icons and the edit icon (for moving to a different user course category)
* @todo complete the comments on this function: the parameter section
*/
function display_category_icons($current_category, $all_user_categories) {
global $safe, $stok;
$max_category_key = count($all_user_categories);
if ($safe['action'] != 'unsubscribe') { // we are in the unsubscribe section then we do not show the icons.
echo "< table > ";
echo "< tr > ";
echo "< td > ";
if ($current_category != $all_user_categories[0]) {
echo "< a href = \"courses.php?action=".$safe['action']."&move=up&category=".$current_category."&sec_token=".$stok."\" > ";
echo Display::return_icon('up.gif', get_lang('Up')).'< / a > ';
}
echo "< / td > ";
echo " < td rowspan = \"2\" > ";
echo " < a href = \"courses.php?action=sortmycourses&categoryid=".$current_category."&sec_token=".$stok."#category".$current_category."\" > ";
Display::display_icon('edit.gif', get_lang('Edit'));
echo "< / a > ";
echo "< / td > ";
echo "< td rowspan = \"2\" > ";
echo " < a href = \"courses.php?action=deletecoursecategory&id=".$current_category."&sec_token=".$stok."\" > ";
Display::display_icon('delete.gif', get_lang('Delete'), array('onclick' => "javascript: if (!confirm('".addslashes(api_htmlentities(get_lang("CourseCategoryAbout2bedeleted"), ENT_QUOTES, api_get_system_encoding()))."')) return false;"));
echo "< / a > ";
echo "< / td > ";
echo "< / tr > ";
echo "< tr > ";
echo " < td > ";
if ($current_category != $all_user_categories[$max_category_key - 1]) {
echo "< a href = \"courses.php?action=".$safe['action']."&move=down&category=".$current_category."&sec_token=".$stok."\" > ";
echo Display::return_icon('down.gif', get_lang('Down')).'< / a > ';
}
echo "< / td > ";
echo " < / tr > ";
echo "< / table > ";
}
}
/**
* This function displays the form (dropdown list) to move a course to a
* different course_category (after the edit icon has been changed)
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $edit_course:
* @return html a dropdown list containing all the user defined course categories and a submit button
* @todo when editing (moving) a course inside a user defined course category to a different user defined category
* the dropdown list should have the current course category selected.
*/
function display_change_course_category_form($edit_course) {
global $_user, $_configuration, $safe, $stok;
$edit_course = Security::remove_XSS($edit_course);
$DATABASE_USER_TOOLS = $_configuration['user_personal_database'];
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql = "SELECT * FROM $tucc WHERE user_id='".$_user['user_id']."'";
$result = Database::query($sql, __FILE__, __LINE__);
$output = "< form name = \"edit_course_category\" method = \"post\" action = \"courses.php?action=".$safe['action']."\" > \n";
$output .= '< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ';
$output .= "< input type = \"hidden\" name = \"course_2_edit_category\" value = \"".$edit_course."\" / > ";
$output .= "\t< select name = \"course_categories\" > \n";
$output .= "\t\t< option value = \"0\" > ".get_lang("NoCourseCategory")."< / option > ";
while ($row = Database::fetch_array($result)) {
$output.="\t\t< option value = \"".$row['id']."\" > ".$row['title']."< / option > ";
}
$output .= "\t< / select > \n";
$output .= "\t< button class = \"save\" type = \"submit\" name = \"submit_change_course_category\" > ".get_lang('Ok')."< / button > \n";
$output .= "< / form > ";
return $output;
}
/**
* This function displays the unsubscribe part which can be
* 1. the unsubscribe link
* 2. text: you are course admin of this course (=> unsubscription is not possible
* 3. text: you are not allowed to unsubscribe from this course
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param array $course: the array with all the course & course_rel_user information
* @return html a delete icon or a text that unsubscribing is not possible (course admin) or not allowed.
*/
function display_unsubscribe_icons($course) {
global $stok;
if ($course['status'] != 1) {
if ($course['unsubscribe'] == 1) {
// Changed link to submit to avoid action by the search tool indexer.
echo "< form action = \"".api_get_self()."\" method = \"post\" onsubmit = \"javascript: if ( ! confirm ( ' " . addslashes ( api_htmlentities ( get_lang ( ' ConfirmUnsubscribeFromCourse ' ) , ENT_QUOTES , api_get_system_encoding ( ) ) ) . " ' ) ) return false ; \ " > ";
echo '< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ';
echo "< input type = \"hidden\" name = \"unsubscribe\" value = \"".$course['code']."\" / > ";
echo "< input type = \"image\" name = \"unsub\" src = \"".api_get_path(WEB_IMG_PATH)."delete.gif\" alt = \"".get_lang('_unsubscribe')."\" / > < / form > ";
} else {
display_info_text(get_lang('UnsubscribeNotAllowed'));
}
} else {
display_info_text(get_lang('CourseAdminUnsubscribeNotAllowed'));
}
}
/**
* retrieves all the courses that the user has already subscribed to
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param int $user_id: the id of the user
* @return array an array containing all the information of the courses of the given user
*/
function get_courses_of_user($user_id) {
$TABLECOURS = Database::get_main_table(TABLE_MAIN_COURSE);
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
// Secondly we select the courses that are in a category (user_course_cat< >0) and sort these according to the sort of the category
$user_id = intval($user_id);
$sql_select_courses = "SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
FROM $TABLECOURS course,
$TABLECOURSUSER course_rel_user
WHERE course.code = course_rel_user.course_code
AND course_rel_user.user_id = '".$user_id."'
ORDER BY course_rel_user.sort ASC";
$result = Database::query($sql_select_courses,__FILE__,__LINE__);
while ($row = Database::fetch_array($result)) {
// we only need the database name of the course
$courses[] = array('db' => $row['db'], 'code' => $row['k'], 'visual_code' => $row['vc'], 'title' => $row['i'], 'directory' => $row['dir'], 'status' => $row['status'], 'tutor' => $row['t'], 'subscribe' => $row['subscr'], 'unsubscribe' => $row['unsubscr'], 'sort' => $row['sort'], 'user_course_category' => $row['user_course_cat']);
}
return $courses;
}
/**
* retrieves the user defined course categories
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return array containing all the IDs of the user defined courses categories, sorted by the "sort" field
*/
function get_user_course_categories() {
global $_user;
$table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql = "SELECT * FROM ".$table_category." WHERE user_id='".$_user['user_id']."' ORDER BY sort ASC";
$result = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($result)) {
$output[] = $row['id'];
}
return $output;
}
/**
* Retrieves the user defined course categories and all the info that goes with it
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return array containing all the info of the user defined courses categories with the id as key of the array
*/
function get_user_course_categories_info() {
global $_user;
$table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql = "SELECT * FROM ".$table_category." WHERE user_id='".$_user['user_id']."' ORDER BY sort ASC";
$result = Database::query($sql, __FILE__, __LINE__);
while ($row = Database::fetch_array($result)) {
$output[$row['id']] = $row;
}
return $output;
}
/**
* @author unknown
* @param string $text: the text that has to be written in grey
* @return string: the text with the grey formatting
* @todo move this to a stylesheet
* Added id grey to CSS
*/
function display_info_text($text) {
//echo "< font color = \"#808080\" > " . $text . "< / font > \n";
echo $text;
}
/**
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @param string $edit_course:
* @return html output: the form
*/
function display_edit_course_category_form($edit_course_category) {
global $safe, $stok;
echo "< form name = \"edit_course_category\" method = \"post\" action = \"courses.php?action=".$safe['action']."\" > \n";
echo "\t< input type = \"hidden\" name = \"edit_course_category\" value = \"".$edit_course_category."\" / > \n";
echo '< input type = "hidden" name = "sec_token" value = "'.$stok.'" > ';
$info_this_user_course_category = get_user_course_category($edit_course_category);
echo "\t< input type = \"text\" name = \"title_course_category\" value = \"".$info_this_user_course_category['title']."\" / > ";
echo "\t< button class = \"save\" type = \"submit\" name = \"submit_edit_course_category\" > ".get_lang('Ok')."< / button > \n";
echo "< / form > ";
}
/**
* Updates the user course category in the dokeos_user database
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University
* @return string a language variable saying that the user course category was stored
*/
function store_edit_course_category() {
global $_user, $_configuration;
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
$sql_update = "UPDATE $tucc SET title='".api_htmlentities($_POST['title_course_category'], ENT_QUOTES, api_get_system_encoding())."' WHERE id='".(int)$_POST['edit_course_category']."'";
Database::query($sql_update, __FILE__, __LINE__);
return get_lang('CourseCategoryEditStored');
}
